iOS 9.1 (13B5143) for iPhone 4s ✗ This OTA is not signed. OTA firmwares cannot be restored to. IPSW Downloads collects them for
potential future use. They might also be useful if you're doing research.
Release Date October 21, 2015 Upload Date October 16, 2015 Filename f27cc7d37e1e4051bea2a440e02caa2a5a795063.zip Filesize 1.1 GiB Identifier iPhone4,1
All information on these pages is automatically updated. When you click on any Apple Software link on
the site, you are redirected to an Apple server. We do not (and never will) mirror these files. All trademarks are the property of their respective owners. IPSW Downloads is not affiliated with Apple Inc.
© 2026 IPSW Downloads
This page was last modified at 1:23:53 pm UTC on Monday, April 6, 2026 and built at 10:20:07 am UTC on Sunday, April 12, 2026.